Messages in this thread | | | Date | Mon, 17 Jan 2022 19:01:12 +0300 | From | Boris Lysov <> | Subject | Missing ARM TWD Watchdog driver? |
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Hello everyone,
I stumbled upon the ARM TWD Watchdog driver which seems to be missing (or I'm just blind).
As per commit a33f5c380c4bd3fa5278d690421b72052456d9fe ("Merge tag 'xfs-5.17-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux"), multiple device trees declare usage of arm-twd:
arch/arm/boot/dts/arm-realview-eb-mp.dtsi arch/arm/boot/dts/arm-realview-pb11mp.dts arch/arm/boot/dts/arm-realview-pbx-a9.dts arch/arm/boot/dts/bcm5301x.dtsi arch/arm/boot/dts/bcm63138.dtsi arch/arm/boot/dts/bcm-hr2.dtsi arch/arm/boot/dts/bcm-nsp.dtsi arch/arm/boot/dts/berlin2cd.dtsi arch/arm/boot/dts/highbank.dts arch/arm/boot/dts/mmp3.dtsi arch/arm/boot/dts/owl-s500.dtsi arch/arm/boot/dts/spear13xx.dtsi arch/arm/boot/dts/ste-dbx5x0.dtsi arch/arm/boot/dts/vexpress-v2p-ca5s.dts arch/arm/boot/dts/vexpress-v2p-ca9.dts
and it is documented in Documentation/devicetree/bindings/watchdog/arm,twd-wdt.yaml
However I could not find the driver itself. I tried running case-insensitive grep and ripgrep to no avail. Does this driver actually exist? Is it gone?
I'm not well experienced with LKML yet and I apologize for if I asked the question on the inappropriate mailing list. As per 3.3 of [1], I'm kindly asking to CC me with answers.
Thanks!
[1] The linux-kernel mailing list FAQ http://vger.kernel.org/lkml/
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